Pulley attachment.



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PULLEY ATTACHMENT. APPLICATION FILED MAR- 31. I917.

1,241,726. Patented 0% 2,1917.

FFICE.

AUGUST FONTAINE, OF GREEN BAY, WISCONSIN.

PULLEY ATTACHMENT.

Specification of Letters Patent.

Patented Oct. 2, 1917.

Application filed March 31, 1917. Serial No. 158,928.

To all whom it may concern:

Be it known that 1, AUGUST FONTAINE, a citizen of the United States, residing at Green Bay, in the county of Brown and State of WVisconsin, have invented certain new and useful Improvements in Pulley Attachments, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improvements in pulley attachments and it is an object of the invention to provide a novel and improved device of this general character adapted to be applied to a drive pulley or the like for increasing the radial diameter thereof in order to vary the peripheral speed of said pulley without the necessity of adjusting the speed of the motor.

The invention consists in the details of construction and in the combination and arrangement of the several parts of'my improved pulley attachment whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will. be hereinafter more fully set forth.

The novel features of the invention Wlll hereinafter be definitely clalmed.

In order that my invention may be the better understood, 1 will now proceed to describe the same with reference to the ac= companying drawings, WllQIBlIl Figure 1 is a view partly in elevation and partly in section illustrating a pulley attachment constructed in accordance with an embodiment of my invention and in applied position;

Fig. 2 is a fragmentary circumferential sectional view taken through my improved attachment as herein disclosed;

Fig. 3 is a sectional view taken substantially on the line 3-3 of Fig. 1; and i Fig. 4 is a fragmentary view in elevation of one of the blocks as herein embodied.

As disclosed in the accompanying drawings, P denotes a pulley of ordinary or preferred construction and It denotes my 1mproved attachment which is in the nature of a supplemental rim and adapted to be disposed circumferentially around the rim of the pulley P.

As herein embodied, my attachment R comprises a plurality of blocks 1 of a length substantially equal to the width of the rim of the pulley P and having their ad acent faces disposed on a predetermined bevel so that the attachment may assume a substair tially circular or cylindrical form.

The blocks 1 adjacent their opposite ends are provided with the transversely disposed openings 2 through which are loosely directed the flexible members preferably of wire. The end portions of said members 3 are disposed through the openings in two of the adjacent blocks 1 and terminate in the hooks & engageable with the outer faces of said two last named blocks whereby it will be perceived that as said blocks are separated the flexible members or wires 3 will be so moved as to tighten the blocks 1 and cause the same to snugly fit upon the pulley P.

In order to separate the two blocks 1 with which the free end portions of the flexible member 3 coact, I provide the wedge member 5 adapted to be inserted between these two blocks and the under surface of the wedge member 5 is provided with the transversely disposed grooves or channels 6 adapted to receive the overlying portions of the flexible members 3 for a purpose which is believed to be self-evident.

I also find it of advantage to provide the wedge member 5 with the radially disposed openings 7 adapted to register with the openings 8 formed in the rim of the pulley 1.; Through said registering openings 7 and 8 are adapted to be directed the bolts 9 with the heads 10 thereof outwardly directed.

oacti ng with the free ends of the bolts 9 are the nuts '11. of a conventional type and which are adapted to engage the inner face of the rim of the pulley P. By this arrangement it will be perceived that my improved at tachment is effectively held to the pulley 1 yet capable of convenient removal. It is also to be observed that the outer portions of the openings 7 are countersunk or reamed so that the heads 10 of the bolts 9 will be disposed below the periphery of the attachment and therefore afford no obstruction or interference with the belt which may be directed around the attachment.

When it is desired to displace my improved attaclnnent it is only necessary to remove the wedge member 5 and to force the adjacent blocks 1 one toward the other, which will permit an expansion of the attachment.

From the foregoing description, it is thought to be obvious that. a pulley attachment constructed in accordance with my invention is of an extremely simple and comparatively inexpensive nature and is particularly well adapted for use by reason of the convenience and facility with which it'may be assembled, and it will also be obvious that my invention is susceptible of some change and modification without material departure from the principles and spirit thereof and for this reason I do not wish to'be understood as limiting myself to theprecise arrangement and formation of the several parts herein shown in carrying out my invention in practice, except as hereinafter claimed.

I claim:

1. An attachment for a pulley adapted to be disposed circumferentially therearound and comprising a plurality of separable blocks, a flexible member loosely directed through said blocks and having its extremities disposed'through two adjacent blocks with one extremity interlocking with one of said blocks and its opposite extremity interlocking with the second of the blocks, and a wedge member insertible between said two last named blocks.

2. An attachment for a pulley adapted to be disposed circumferentially therearound and comprising a plurality of sepa-r rable blocks, a flexible member loosely directed through said blocks and having its extremities disposed through two adjacent blocks with one extremity interlocking with one of said blocks and its opposite extremaround and comprisinga plurality of sepa-' rable blocks, a flexible member loosely directed through said blocks and having its extremities disposed through two adjacent blocks with one extremity interlocking with one of said blocks and its opposite extremity interlocking with the second of the. blocks, a wedge member insertible between said two last named blocks, and means coacting with the wedge member for securing the attachment to the pulley.

In testimony whereof I hereunto affix my signature in the presence of two witnesses. AUGUST. FONTAINE.

Witnesses: I l

JOSEPHINE A. KITTNER,

ERL GREENWOOD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 

